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Wiring diagram for PC with relay

FRESH AIR INLET DAMPER, SERIES >HAC= WITH RELAY, INTERCONNECTED TO A FORCED AIR HEATING SYSTEM

Hoyme recommends power closed fresh air inlet dampers for replacement/make up air as apposed to power open types. Increased versatility in opening this damper is thus achieved by the use of a manual toggle switch, dehumidistat, timer or a relay adaptor placed in the >optional override= section of the wiring diagram. When ordering, the designation at the end of the model number should be @PC@ which designates Power Closed. To facilitate interconnection to the furnace circuit, use the following diagram.

Pictorial Wiring Diagrams:

OLD STYLE FURNACE NEWER STYLE FURNACE

Damper Identification: >HAC- 0X1'1'- OPC=. AX@ = diameter in inches. >1' = 1 relay
i.e.: Damper HAC- 0511- OPC; damper diameter 5", c/w relay and is power closed.

Hook-up procedure:
Damper terminal (1) to >TH= on older style furnace; to >W= on newer style furnace.
Damper terminal (3) to >TR= on older style furnace; to >C= on newer style furnace.
Damper terminal (5) to >TH-TR= on older style furnace; to >R= on newer style furnace. 

This damper opens when the furnace fires and closes when the fire stops. To bring in fresh air when furnace is not firing, use a Hoyme Relay Adaptor, Interval Timer, dehumidistat or manual override switch installed as indicated in the wiring diagram.
Important notice: Manual override cannot be achieved using a Power Open damper.

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